unmanned
/'ʌn'mænd/
Học thuậtThân thiện
Definition
- Adjective:
- Lacking a crew; operating without a human operator or occupant: Describes a vehicle, machine, or system that functions without a human being physically present inside or directly controlling it.
- Not manned; devoid of people: Can describe a place or post that is temporarily without its usual human attendants or staff.
Examples of Usage
- Adjective:
- The government launched an unmanned probe to study the asteroid.
- The factory uses unmanned robotic systems for assembly overnight.
- During the storm, the lighthouse remained unmanned.
Advanced Usage
- "Unmanned aerial vehicle (UAV)": A technical term for a drone, an aircraft piloted by remote control or onboard computers.
- The military uses unmanned aerial vehicles for surveillance.
- "Unmanned ground vehicle (UGV)": A vehicle that operates on land without a human occupant.
- The unmanned ground vehicle was deployed to inspect the hazardous area.
Variants and Related Words
- Unman (verb, rare/archaic): To deprive of courage or strength; to cause to lose manly qualities.
- The sight did not unman him. (Note: This is a different, less common word and not a direct variant of the adjective "unmanned".)
- Manned (adjective): The direct opposite, meaning operated by or carrying a human crew.
- The manned mission was a historic success.
Synonyms
- Crewless: Lacking a crew.
- Autonomous: (In context) Capable of performing tasks without human intervention.
- Remote-controlled: Operated from a distance.
- Automatic: Operating by itself with little or no direct human control.
Related Phrases
- Unmanned space mission: A spaceflight without human astronauts aboard.
- The unmanned space mission collected valuable data from Venus.
- Unmanned post: A position or station, like a security booth or ticket counter, that is temporarily without a person assigned to it.
- The entrance was guarded by an unmanned post with only a camera.
Related Idioms
Adjective
- lacking a crew
- an unmanned satellite to Mars